NDLI: A reconfigurable double sampling sigma delta modulator for 4G mobile terminals

Content Provider	IEEE Xplore Digital Library
Author	Shun Cao Jinfeng Li Ying Wang
Copyright Year	2010
Description	Author affiliation: College of information engineering, Shenyang university of chemical technology, Shenyang, China (Shun Cao; Jinfeng Li; Ying Wang)
Abstract	A reconfigurable cascade sigma delta modulator for multi-mode zero-IF receivers is presented on the system level. A feed-forward path is introduced in the modulator to diminish the harmonic distortion and achieve a high resolution. In comparison with other feed-forward structures presented before, the circuit complexity is decreased, and the chip area and power dissipation are saved in the proposed modulator. The double sampling integrator is employed to increase the over-sampling ratio. The coefficient scaling is deduced. The non-idealities of the operational amplifiers, comparators and capacitor mismatch are analyzed and modeled in Matlab/ Simulink. The parameter requirements for the basic circuit cells are obtained. The simulation results indicate that a peak SNDR of 85/81/67/65/58/52 dB is achieved for GSM /Bluetooth /GPS /WCDMA /WLAN /WiMAX mode. The efficiency and feasibility of the proposed modulator are validated by the behavioral simulations. The performances of the modulator meet the requirements of the considered application.
Starting Page	4328
Ending Page	4332
File Size	300397
Page Count	5
File Format	PDF
ISBN	9781424465132
e-ISBN	9781424465163
DOI	10.1109/CISP.2010.5647762
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	GSM Wireless LAN Modulation multi-mode receiver Receivers Spread spectrum communication WiMAX sigma delta modulator double sampling techniques Multiaccess communication feed-forward path
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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